Mortising and boring machine



' UNITED STATES PATENT OFFICE. V

J. M. JAY, OF CANTON, OHIO.

MORTISING AND BORING MACHINE.

Specification of Letters Patent No. 17,880, dated July 28, 1857.

To all 'whom 'it/may concern:

Be it known Vthat I, J. M. JAY, of Canton, in the county of Stark andState of Ohio, have invented certainv new and useful Improvements inBoring and Mortising Machines; and I do hereby declare that thefollowing is a full and exact description of the same, reference beinghad to the accompanying drawings, in which- Figure 1 is a side elevationof my improved machine, and Fig. 2, a plan view. The other igures aredetached sections which will be referred to in description.

A indicates a general view of the frame work of the machine, theproportion of which would vary, in accordance with the size of themachine, and the amount of labor to be performed.

B, Fig. 1, represents the driving shaft, provided with pulleys, in theordinary manner, so as to drive the pulley O, Fig. 2, by means of abelt. The shaft of the pulley O, forms the stock for holding the bit,which is inserted in the end D.

This shaft revolves in boxes, in the ordinary manner. The bit formortising or boring, revolves, although in some cases, if

l deemed expedient, the bit may be stationary for mortising. The staifto be bored or mortised is placed on the rack E. This rack moves uponhinge joints, at F, F, and u on a pivot joint at F', and by means ofwhic it is connected to the slide frame G, by means of this pivot jointF', the rack may be turned at various angles, horizontal to the bit, asindicated by the red lines E'. This rack is turned by means of thesegment wheel H, attached to the rack, and o erated by the worm I, inthe teeth of the wheel. The worm is on the shaft I', rovided with boxes,I", I". A crank is app ied to the outer end of the shaft, for thepurpose of operating the rack, as before described.

The rack E, in Fig. 1, is shown'as standing vertically at right anglesto the bit stock at D, but this position may be changed to an acute orobtuse angle, as indicated by the red lines E" and E" This isaccomplished by means ofthe slide J, which slips in and out of thesocket J this slide and socket forms a brace to support the rack E,which brace may be elongated or shortened as may be required by theposition of the rack. At the up er end of the socket is a set screw, soas to hold the brace in any desired length. This brace is connected tothe rack E, and slide frame G, by in joints, as indicated at J", and J"whic renders the brace adjustable to the various angles which may begiven to the rack. By the arrangement described, the rack E, may beadjusted to any angle vertical or horizontal to the bit, so that thestuff on the rack may be mortise'd or bored, at any angle, and besidesthis, the slide frame G, moves horizontally to the bit, and at rightangles, as it slides on ways between the guides K, K. On the guide K',are two gage plates L, L', secured in place by set screws these gageplates may be so set as to determine the length of the mortise as thepin M, when brought in contact with either of the guides L, L', stopsit, as the length of the mortise coincides with the distance between thegage plates and the pin M allows the frame G to slide only the distancebe tween the gage plates.

The rack E, and the slide frame G, with their respective devices, restupon and are connected with the slide table N, which moves upon ways orguides horizontal and parallel to the bit.

-To the back part of the slide table is attached a strap O, which passesover the pulley at P, and is fastened to the lever By pressing down thelever with the foot the slide table and rack are drawn u to the bit, andas soon as the lever is re ieved from pressure, the rack, &c., is drawnback by the springs R, R, Fig. 2, as it is necessary that the rackshould be nearer the bit sometimes than at others, owing to the size ofthe stuff to be worked, and as it is desirable to have the same tensionof spring at all times, the springs may be adjusted accordingly, therebeing holes in a plate attached to the frame, into which the back end ofthe spring may be hooked, for the purpose of setting the springs.

For the purpose of gaging the depth of the tool, in mortising andboring, I attach the screw S, t0 the slide table, by the nut S', thisnut is belted to the wheel T, by this means the screw may be moved in orout; the end of the screw being arrested by a plate attached to theframe directly under the end of the shaft at D.

The slide table N rests upon the adjustable frame U, from which extendfour arms g these arms, two on each side which are connected by arallellinks to four posts below. Two of these links are seen at V, V, Figs. 1and 2.

W, represents a pin joint, which forms the point of connection of thelinks. By means of these parallel links, the slide table will always behorizontal and parallel to the bit.

On the under side of the table is attached two swivel nuts, by a brace,one of which is seen at a, Fig. 1. The nut (1 is between the braces, asseen in Fig. 3. The nuts receive the screws b, b, Figs. 1 and 2. At oneend of the screw-r0d is keyed a bevel gear c, Figs. 1, 2, and in sectionFig. 4. These gears mesh into the gears d, d. These gears are upon theshaft e. By turning the shaft e, the screws b, b, are operated so as tolower and raise the table U, to U, and the links correspondingly.

Each shaft b, works in one end, in an arm at f, f, seen in Fig. 5, theother end of the arm is loose upon the shaft e. By these adjustablearms, and the swivel nuts, the screws b, b, are adjusted to any positionof the table, and to the various angles, the screws necessarily assume,as indicated at b', b, as the table is raised and lowered.

If the bit remains stationary, the rack may be moved up to it, by thefoot lever, and the slide frame G, with the connecting devices, may beoperated as before described, so that the machine will mortise, whetherthe bit revolve or not, as may be required.

What I claim as new and my improvement and what I desire to secure byLetters Patent, is-

The arrangement of the rack E, adjustable brace segment slide rack G,and slide table and in combination with the parallel linked table,screws swivel nuts a, and arms f, f, in the manner, and for the purposedescribed.

J. M. JAY.

Witnesses:

C. L. REIFsNEIDER, M. B. DEsHoNG.

